Sash-fastener.



H. ATWATEB.

SASH PASTENER. APPLICATION TILED JULY17,1908.

Patented Oct, 20, 1908.

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HENRY ATWATER, .OF GHATTANOOGA, TENNESSEE.

SASH-FASTENER.

Specification of Letters Patent.-

Patented Oct. 20, 1908.

Application filed July 17, 1908. Serial No. 444,110.

To all whom it may concern:

Be it known that I, HENRY ATWATER, a citizen of the United States, and aresident of Chattanooga, in the county of Hamilton and State ofTennessee, have invented a new and Improved Sash-Fastener, of which thefollowing is a full, clear, and exact descriptlon.

The improvement is of a class in which a fastener is mounted upon themeeting rail of the lower sash, and by adjustment locks both sashes inclosed condition.

The purpose of my invention is to provide novel, simple details ofconstruction for a device of the character indicated, which afford aneat, strong, conveniently-operated sash fastener, which affords meansfor locking both sashes closed, or either sash opened more or less asmay be desired.

The invention consists in the novel construction and combination ofparts, as is hereinafter described and defined in the appended claims.

Reference is to be had to the accompany ing drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1. is an inner side view of an upper and lower sash at theirmeeting transverse rails, a portion of the window casement being brokenaway, and the improved sash fastener secured on the top of the meetingrail of the lower sash and bearing upon a side bar of the upper sash;Fig. 2 is a transverse sectional view of the sashes and a face View ofthe sash fastener, seen in the direction of the arrow a in Fig. 1, andshowing the sash fastener in unlocked condition; and Fig. 3 is asectional view on the line 33 in Fig. 1, seen in the direction of thearrow 0:, and showing the fastener device adjusted for securing bothsashes in closed condition.

In the drawings, A indicates a window casement, and A a molding strip ofsaid casing at the right hand side thereof.

B is the upper sash, and C the lower sash, both slidable in the usualmanner in the casement, having the adjacent surfaces of their side bars0, B, separated by a parting stri D.

'l he improved sash fastener primarily con sists of a base plate 5,having an upright flange 5 formed near a straight edge thereof, saidflange in service facing the side stile of the casement. An opening isformed horias best shown in Fig. 3, the cam surfaces cl are similarlyserrated. The handle lever 6 projects across the face of one cam section7, but is spaced therefrom sufliciently by the journal shaft 6 to permitsaid shaft to have a loose engagement with the bearing a, so that thecam sections 7, 7, may be rocked freely by the manipulation of thehandle lever.

The base plate 5 is extended somewhat beyond the upright flange 5 andupon said extension 5 two similar ears 0, e, are formed that projectupward and are laterally apertured as at e in Fig. 3.

Two similar clamping dogs 8, 8, are completing details of the improvedsash fastener, each consisting of a metal bar having flat sides that areparallel with each other and slightly curved edges. A transverse journalpin 9 is formed or secured on the lower end of each. clamping dog 8,said pins having a rocking engagement with the respective ears 6,loosely occupying the transverse apertures e therein. The relativeposition of the clamping dogs 8 is such with regard to the cam sections7, that the inner edges of the dogs will be opposed to the cam surfaces(1. As shown clearly in Fig. 3, the inner edges of the clamping dogs 8are slightly concave, and transverse serrations h are formed thereinthat correspond in form and size with the serrations on the cam surfacesd. Upon the outer convex edges of the clam ing dogs 8, transversegrooves are formed, t us producing ratchet teeth therein which hookupward.

The width of the upper cross bar or meet ing rail C of the lower sash C,permits the base plate 5 of the sash fastener to be mounted and securedthereon, so that the clamping dogs 8, 8, will respectively be positionedopposite the inner surface of the right hand bar B of the upper sash andthe o posed surface of the molding strip A on t e casement A.

It will be noted that when the handle lever 6 is rocked into an uprightposition, as indicated by the arrow at, in Fig. 2, and arrow 11:

zontally in the side edge of the flange 5 and 1 in Fig. 3, the clampingdogs 8 will be free to assume an upright position and have ampleclearance from the side bar B and molding strip A, so that either sashmay be freely Slit to open or close the window.

When it is desired to fasten the sashes B, C, in closed adjustment, asis indicated in Fig. 3, this is instantly effected by rocking the lever6 downward, as shown by dotted lines in said figure, which willcorrespondingly rock the cam sections 7 and enforce their engagementwith the concave edges of the clamping dogs 8. The pressure exerted bythe cam sections 7 on the dogs 8 will force them outward simultaneously,and embed their teeth in the adjacent surfaces of the side rail or bar Band the casement molding strip A, thus producing a positive lockingadjustment of the fastener device that can only be released by anelevation of the lever 6.

It will be seen that the improved sash fastener is adapted for securingthe sashes B, C, in any desired position of open adjustment therefor, bymeans of the lever 6 and parts of the device controlled thereby; thisfeature being particularly advantageous when it is desired for thepurpose of ventilation to secure the upper sash lowered a few inches, orthe lower sash raised slightly for a like purpose.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A sash fastener, comprising a base plate having an upright flangethat is provided with a lateral opening, a handle lever, a double edgedearn, a shaft connecting the lever and cam, and clamping dogs carried bythe base plate and adapted to receive pressure from the cams.

2. A sash fastener, comprising a base plate, an upright flange thereonhaving a lateral opening therein, an extension of the base plate nearsaid flange, perforated ears on the extension, a cam bloc; formed in twosections, the cam surfaces thereon trending oppositely, a handle lever,a short shaft oining the cam blocks with the lever, said shaft engagingthe opening in the upright flange, and clamping dogs rockable on theperforated ears, said dogs receiving pressure from the cam sections whenthey are rocked with the lever.

3. A sash fastener, comprising a base plate, an upright flange on saidbase plate near one straight edge thereof, said flange having a lateralopening therein that is concave in its bottom, forming a bearing, thebase plate having an extension beyond the flange, upright ears on theextension, said ears each having a lateral opening therein, a cam blockformed in two integral sections, the camgfaces of which trendoppositely, said faces being serrated, a handle lever, a short shaftconnecting the cam sections with the lever, said shaftfiiaving rockableengagement with the upright flange in its opening, and two clamping dogseach pivoted at one end on a respective ear, and having curved edgesthat are serrated, the concave edges thereof having engagement with theserrated faces of the cam sections.

4. The combination with a window casement, and an upper sash and a lowersash, both slidable in the casement, of a sash fastener, comprising abase plate securable on the meeting rail of the lower sash, an u rightflange on the base plate, having a l ateral opening therein near itsupper edge, a cam block formed in two sections, the cam surfaces ofwhich trend oppositely, said surfaces having serrations thereon, ahandle lever, a short shaft connecting the cam block with the handlelever, said shaft loosely engaging within the opening in the uprightflange, ears on the base plate, having lateral openings therein, andclamping dogs pivoted to the ears through the openings therein, saiddogs receiving pressure on their inner edges from the cam sections andpressing upon the upper sash and casement when the lever is rockeddownward.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY ATVVATER.

Witnesses BOYD THOMPSON, SAM E. W'HITAKER.

